Audhd and sex

I (25yo) am struggling to initiate sex or feel like sex is a chore but I still get aroused. I just feel so confused. I have been going through a lot mentally at the moment. I know I want sex, I know I want to have sex more often. I get upset when we don't have sex. But it's all my fault. I get anxious when I try to express my needs and wants to my Fiancé during sex and I feel the same when I want to initiate (so I never do). This has been an issue in our relationship to me, not to him. He's been extremely patient and understanding. It's annoying because I used to be very hypersexual/sexually promiscuous when I was younger, also right before I met him. I used to be confident and be able to take charge etc I will admit that sex can be awkward with him sometimes because I'm his first but I want to be able to not feel anxious every time or feel like the sex can be better How can I get past the anxiety? What can help me initiate more? How do I regain confidence? This situation feeds into my pre marriage anxiety.